Change in coreboot[master]: cpu/intel/common: Update CPPCv3 Nominal Frequency entry

[Sridhar Siricilla (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Sugnan Prabhu S, Ravindra, Michael Niewöhner, Patrick Rudolph, Ravindra N.
Sridhar Siricilla has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57783 )

Change subject: cpu/intel/common: Update CPPCv3 Nominal Frequency entry
......................................................................

Patch Set 7:

(1 comment)

File src/cpu/intel/common/common_init.c:

https://review.coreboot.org/c/coreboot/+/57783/comment/13b201a7_a1d3e6e7 
PS7, Line 136: CPPC_DWORD(0);
> The difference is: CPPC_UNSUPPORTED resulting in `{Register {(SystemMemory, 0, 0, 0, 0)}` which the  […]

@Tim/Michael,
Correct, here I am just initializing the element to ZERO.

In my follow-up patches, I will be updating the element with Nominal Frequency in the file#src/soc/intel/common/block/acpi/acpi.c.
As these changes are from 2 difference code directories, with this patch, I am setting the CPPC_NOMINAL_FREQ element to ZERO. In other patch, I will be updating the element with Nominal Frequency. I will expose all my patch train for review.